Beyond the discomfort they can cause, rodents can transmit to humans (in Europe) diseases like leptospirosis, fever and rarely clonorchiasis or parasitic meningitis (Southeast Asian origin). They can also spread salmonellosis.
Leptospirosis are kind of infectious jaundice causing a high fever. After a very strong initial fever, everything seems back to normal but after a fortnight, a relapse occurs. The germs pass through mucosal (nose and mouth) or skin. They attack the liver and kidneys. The treatment of these diseases can cause long convalescence. Contamination can occur through direct contact with rats (bite) or simply by walking or swimming in water polluted by infected rats.
The bites of rats or rodents can inject a bacillus (spirilum minus). The bite initially seems to heal and fever thrust occurs 4 to 5 days accompanied by headaches, muscle aches and digestive disorders). It follows a rash of red spots accompanied by joint pain.
The clonorchiasis is an Asian parasitic (worm of about fifteen millimeters). This parasite is rare in Europe and its reproductive cycle requires the presence of water and some fish. The ingested larvae back the bile ducts and are located in the bile ducts. The disease may occur several years after infection with the appearance of kidney stones.
In addition to the germs that may be carried by rodents, these, very voracious, can cause significant damage to the beams, pipes, electrical cables, insulation materials, etc. Most rodents are endowed with an efficient reproductive system. For example, the sewer rat (or Norway rat) can have 3 to 5 litters per year with 3 to 6 young rats.
If you hear scratches, or see small droppings, you are probably in the presence of rats or mice.
Do not wait, contact a professional like Azur-Désinfection.